Improvement and Implementation of PNLMS Algorithms Based on DSP

Author

Running, Gao ; Bingkun, Gao ; Mingzi, Xu

Author_Institution

Sch. of Electr. & Inf. Eng., Daqing Pet. Univ., Daqing, China

fYear

2010

fDate

25-27 June 2010

Firstpage

5278

Lastpage

5280

Abstract

This paper analyses PNLMS algorithms based on the sparse nature of echo path impulse response. For the problems of PNLMS algorithms in realization process of DSP chips an improved algorithm is presented. Simulation results show that the improved algorithm can effectively improve the convergence rate, robustness, etc., and reduce the computational complexity. Finally, the improved PNLMS algorithm is applied to the C54X DSP chips, the Program Implementation Method is presented, and gives filtering effect of the improved PNLMS algorithm by simulation test.

Keywords

digital signal processing chips; echo suppression; filtering theory; least mean squares methods; DSP chips; PNLMS algorithm; echo cancellation; echo filtering; echo path impulse response; normalized least mean square method; program implementation method; Algorithm design and analysis; Computational complexity; Computational modeling; Digital signal processing; Filtering theory; Finite impulse response filter; Least squares approximation; Convergence; DSP; Echo cancellation; PNLMS Algorithms; Simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6880-5

Type

conf

DOI

10.1109/iCECE.2010.1281

Filename

5629896